Model comparison
Gemini 4 Argon vs Kimi K2.7 Code HighSpeed
Gemini 4 Argon (Google) and Kimi K2.7 Code HighSpeed (Moonshot) side by side: what each costs per million tokens through Rapid Router, how much context each takes, what each supports, and where independent benchmarks place them. Same API, same key; switching is a one-string change.
| Gemini 4 Argon | Kimi K2.7 Code HighSpeed | |
|---|---|---|
| Input price per 1M | $4.00 | $1.90 |
| Output price per 1M | $20.00 | $8.00 |
| Context window | 1M tokens | 262K tokens |
| Max output | 33K tokens | 262K tokens |
| Input types | text, image, video, audio, pdf | text, image, video |
| Capabilities | tools, JSON, vision, audio, reasoning | tools, JSON, vision, reasoning |
| Author | Moonshot |
What a month costs on each
| Workload | Gemini 4 Argon | Kimi K2.7 Code HighSpeed |
|---|---|---|
| Chatbot month (15M in, 4M out) | $140.00 | $60.50 |
| RAG month (40M in, 3M out) | $220.00 | $100.00 |
| Coding month (60M in, 10M out) | $440.00 | $194.00 |
On a typical 75/25 input-output mix, Kimi K2.7 Code HighSpeed costs less (about 57% less than Gemini 4 Argon). Gemini 4 Argon takes the longer prompt at 1M tokens. Try your own numbers in the cost calculator.
Call either one
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "google/gemini-4-argon", "messages": [{"role": "user", "content": "Hello"}]}'
# the other one: change the model string
-d '{"model": "moonshotai/kimi-k2.7-code-highspeed", ...}'Common questions
Which is cheaper, Gemini 4 Argon or Kimi K2.7 Code HighSpeed?
Kimi K2.7 Code HighSpeed is cheaper on a typical mix of 75% input and 25% output tokens, by about 57%. Through Rapid Router both are billed at the provider list price per million tokens.
Which has the larger context window?
Gemini 4 Argon, at 1M tokens. Kimi K2.7 Code HighSpeed offers 262K tokens.
Can I switch between Gemini 4 Argon and Kimi K2.7 Code HighSpeed without changing code?
Yes. Both are callable at https://rapidrouter.ai/api/v1 with the same OpenAI-compatible request; only the model string changes (google/gemini-4-argon or moonshotai/kimi-k2.7-code-highspeed).
How do I pay for Gemini 4 Argon or Kimi K2.7 Code HighSpeed?
Top up a Rapid Router balance by card in US dollars, and both models debit that balance per request.
More Gemini models: Google API pricing · More Kimi: Moonshot API pricing